public function Schema::dropPrimaryKey

public Schema::dropPrimaryKey($table)

Drop the primary key.

Parameters

$table: The table to be altered.

Return value

TRUE if the primary key was successfully dropped, FALSE if there was no primary key on this table to begin with.

Overrides Schema::dropPrimaryKey

File

core/lib/Drupal/Core/Database/Driver/sqlite/Schema.php, line 664

Class

Schema

SQLite implementation of \Drupal\Core\Database\Schema.

Namespace

Drupal\Core\Database\Driver\sqlite

Code

public function dropPrimaryKey($table) {
  $old_schema = $this->introspectSchema($table);
  $new_schema = $old_schema;

  if (empty($new_schema['primary key'])) {
    return FALSE;
  }

  unset($new_schema['primary key']);
  $this->alterTable($table, $old_schema, $new_schema);
  return TRUE;
}